#include <stdio.h>
/* print Fahrenheit-Celsius table
 * for fahr = 0, 20, ..., 300 */
// floating-point version

int main()
{
    //int fahr, celsius;
    float fahr, celsius;
    int lower, upper, step;

    lower=0;
    upper=300;
    step=20;
    fahr=lower;

    printf("  F      C\n");
    while(fahr<=upper){
        celsius = 5*(fahr-32)/9;
        //printf("%3d %6d\n",fahr,celsius);
        printf("%3.0f %6.1f\n",fahr,celsius);
        fahr+=step;
    }
    return 0;
}
